Combination hot-air heater.



0. MILLER.

COMBINATION HOT MR HEATER.

APPLICATION -HLED JUNE 8,1911.

Patented Nov. '26, 1918.

gwuwn hm al boznaqs OBAS MILLER, OF' SPENGERVILLE, OHIO.

Specification of Letters Patent.

COMBINATION HOT-AIR HEATER..-

, Application filed June 8, 1917. Serial No. 173,620.

To all whom it may concern:

Be it known: that I, ORAS MILLER, a citizen of the United States of America, residing at Spencerville, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Combination Hot-Air Heaters, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a combination hotair heater, which is constructed so as to be positioned within a stove, so as to be heated to a very high degree, while air may be in jected into the same, so as to be heated.

Another object of this invention is the production of a heating drum, which is to be positioned within the stove so as to be heated, whereby air within the drum may be heated and conveyed by the exhaust pipe into the room in" which the stove is placed.

A still further object of this invention is the production of a heating drum which is provided with a converging annular lower portion, so as to fit snugly upon the bowl of the stove, while efiicient connections are made for connecting pipes to the drum, thus, allowing air to be conducted into the drum, so as to be heated after which the air will be conveyed from the drum into the room in which the stove is positioned.

With theseand other objects in view this invention consists of certain novel combinations and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawing.

Figure 1 is a vertical section through the hot air heater, taken on line 1-1, Fig. 4, and showing the stove in which the same is positioned in vertical section.

Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1.

Fig. 3 is an enlarged central vertical section through the heating drum, taken on line 33, Fig. 4.

Fig. 4 is an enlarged horizontal section through the heating drum.

By referring to the accompanying drawing by numerals, it will be seen that the stove comprises the usual ash pit 1, and the bowl 2, and upon this bowl 2 is carried the body 3 of the stove. An ordinary draft regulator 4 may be carried by the ash pit 1, as shown clearly in Fig. 1.

The heating drum is formed in one piece and comprises parallel side walls 5, havingl top 6 It will be noted that the'side wallsfi are circular, one wall being of less diameter than the other, so astobe positioned at a spaced distance apart, to constitute a drum. Converging annular portions 7, are formed upon the lower portion of the walls 5, and the annular bottom 8 is formed on the lower edges'of these portions 7. Thus, it will be seen that an inclosed drum is formed, while thelower portion of this drum presents a depending inwardly tapering annular portion. This drum is positioned within the stove so as to cause the inwardly tapering portion thereof to fit within the bowl 2, at its upper portion, as shown clearly in Fig. 1. In this manner the inwardly tapering portion of the drum will wedge into the upper portion of the bowl of the stove, so as to cause the drum to be held against accidental displacement or from shifting when in use.

The cold air pipe 9 passes through the wall 10, so as to receive air from the outer side'of the wall, if so desired, and this inlet pipe 9 has an elbow 11 provided with a nipple 12, projecting through the bottom 8 of the drum, so as to communicate therewith. The internally threaded collar 13 emerges from the top 6 of the drum and the pipe 14 is threaded into engagement with this collar 13. This pipe 14 also projects into the apertured top 3' of the body 3 of the stove, whereby cold air being admitted through the pipe 9 into the lower portion of the drum will be heated, and will rise so as to pass out through the pipe 14 into the room in which the stove is positioned. The auxiliary air-inlet elbow 15 has its upper end communicating with the interior portion of the drum, as shown clearly in Fig. 3. In this manner the air within the room will be efliciently heated, since the heated air passing from the pipe 14 will rise, while the colder air of the room will pass to a space adjacent the floor of the room and will then be finally drawn into the elbow 15 and into the drum, so as to be reheated.

From the foregoing description it will be seen that a very efiicient heating drum for a stove which has its lower portion projecting so as to fit snugly within the bowl of the stove, for holding the drum against accidental displacement, while pipes are con- Patented Nov. 2c, 1918;

nected to the .drum for injecting air thereinto, and for conveying hot air from the drum to any position desired.

What I claim is 1-- An air heater of the class described, consisting of a drum comprising circular spaced Walls, a top formed upon said Walls, annularly spaced converging portions formed upon the lower portions of said Walls, an integral bottom formed upon said converging portions, whereby a tapering portion is formed upon the lower portion of said drum, whereby said drum may be positioned drum, and an exhaust pipe connected to said collar, whereby heated air may be conducted from said drum.

In testimony whereof I hereunto atlix my signature.

ORAS MILLER.

Games of this patent may be obtained for five cents each, by addressing the Commissioner at Patents. Washington, D. G. 

